译林版（2019）必修第三册Unit 3 The world online Welcome to the unit & Reading 课件(共38张PPT，内镶嵌视频)

(共38张PPT)
Unit 3
The world online
Welcome to the unit & Reading
In this lesson, you are going to:
grasp the structure, outline and details of the article by skimming and scanning;
understand how cohesive devices and comparisons are used in the article;
adopt a critical attitude towards the Internet.
Lead-in
There are many important milestones in the development of the Internet. Read the web page on page 29 and discuss the following questions in pairs.
email
emojis
1971
1999
webcam
1991
1. Who sent the first email
It was sent by Ray Tomlinson in 1971.
2. What did the first webcam film
A coffee pot outside the office.
3. What were emojis, small digital images used to do
To express ideas or feelings.
I use emojis most frequently when I message my friends. They look cute, and are a quick and easy way to express how I am feeling.
4. Which of the above inventions do you use most frequently
Why
watch news
watch films
study on the Internet
search for information
5. What convenience does the Internet bring to your life
Pre-reading
According to the title and pictures, what could be discussed in this article
This article might focus on the reasons why the Internet is a world without frontiers.
Read the passage quickly and check your prediction.
While-reading
1. Find the topic sentence of each paragraph.
Para. 1
Para. 5
Para. 4
Para. 3
Para. 2
The Internet has the power to connect people across the world to a single shared community.
One of the greatest advantages of the Internet lies in the quick and easy access to a huge amount of information.
The Internet has also made our lives unbelievably convenient, with all sorts of goods and services provided by electronic commerce, more commonly known as e-commerce.
Above all else, the Internet helps us establish and maintain social ties.
However, while the Internet brings many valuable advantages, being connected has its problems.
2. What’s the structure
Introduction
Advantage 1
Advantage 2
Advantage 3
Conclusion
3. Complete the mind map below.
Main body Paras. 2–4:
The Internet has many advantages.
Introduction Para. 1:
_________________
_________________
Conclusion Para. 5:
____________________
____________________
Advantage 1:
Advantage 2:
Advantage 3:
We can achieve almost anything online.
We have quick and easy access to a huge amount of information online.
E-commerce has made our lives unbelievably
convenient.
The Internet helps us establish and maintain
social ties.
We should use the Internet properly and responsibly.
1. Why does the author think the Internet is a world without frontiers
2. What is the function of the last sentence of the first paragraph
The Internet has the power to connect people across the world to a single shared community.
To introduce the following content.
Careful-reading
Paragraph 1
Advantages Supporting details
Advantage 1 Having access to (1) _________________ information
Gathering information quickly and easily
Advantage 2 (2) ____________________________
Doing shopping quickly and easily
Ordering a taxi with an app
Making travel arrangements
(3) ____________________________ on the smartphone
Advantage 3 Keeping in contact with loved ones
Finding (4) _________________
Discovering communities who (5) ___________________
a huge amount of
Having food delivered to you
Paying for almost everything
long-lost friends
share our hobbies
1. Read Paras. 2-4 carefully, then complete the chart below.
Paragraphs 2-4
2. Can you find out sentences to indicate “quick, easy” in Para. 2
Quick:
With the click of a mouse or the touch of a button, it is possible to find out almost anything we care to know...
Easy:
In the time it takes to find one book in the library, we can use a search engine to bring up millions of results.
3. What does the sentence “Gone are the days of searching shop after shop for the perfect pair of boots” in Para. 3 mean
A. A person may spend many days to buy a pair of boots.
B. People can buy whatever they want on the Internet.
C. Buying a pair of boots is easy for people on the Internet.
D. We can find many shops on the Internet.
√
4. From the perspective of the author, what is the most important advantage of the Internet
√
“Above all else, the Internet helps us establish and maintain social ties.”
A. Connecting people across the world to a single shared community.
B. Quick and easy access to a huge amount of information.
C. Making our lives unbelievably convenient.
D. Establishing and maintaining social ties.
5. Which word can be used to replace the word “maintain” in Para. 4
A. Destroy. B. Measure.
C. Keep. D. Repeat.
√
1. What is the author’s attitude towards the Internet
A. Subjective. B. Objective.
C. Uncaring. D. Doubtful.
2. The last sentence of the essay and the _____ echo each other (前后呼应).
title
However, while the Internet brings many valuable advantages, being connected has its problems.
(虽然，尽管)
√
Paragraph 5
Post-reading
1. What is the genre of this passage
A. Exposition.
B. Narrative writing.
C. Argumentation.
D. Practical writing.
About the writing
√
2. What is the purpose of this passage
A. To show the various advantages of the Internet.
B. To tell people to focus on the disadvantages of the Internet.
C. To call on us to use the Internet as frequently as we can.
D. To tell us the Internet has brought many life-changing advantages, but we should be aware of its potential problems.
√
Firstly, the author introduces his argument by providing some truly life-changing advantages the Internet has brought to us.
Secondly, the author provides examples as evidence to support his argument from three aspects, during which, the author compares each aspect from before and after the invention of the Internet.
Finally, the author summarizes that the Internet can be a place of discovery, wonder and inspiration for everyone, but only if we use it properly and responsibly.
3. How does the author support his argument
(1) Using the cohesive(衔接的) device.
(2) Giving examples.
(3) Making comparisons.
4. Work in groups to figure out what writing skills the author uses to support the argument.
Para. 2 : One of the greatest advantages of the Internet lies in the quick and easy access to a huge amount of information.
Para. 3 : The Internet has also made our lives unbelievably convenient...
Para. 4 : Above all else, the Internet helps us establish and maintain social ties.
Para. 5 : However, while the Internet brings many valuable advantages, being connected has its problems.
5. Can you find the cohesive devices used in this article
Cohesive devices hold the content together so that it reads logically.
6. Find the sentences showing comparisons in the article.
Para. 2：In the time it takes to find one book in the library, we can use a search engine to bring up millions of results.
Para. 3：Gone are the days of searching shop after shop for the perfect pair of boots—you can compare styles and prices quickly and easily in the comfort of your living room.
Why wait hopelessly for a taxi in the cold rain It is now simple and fast to order one with a taxi app. Sit back and relax indoors for a few warm minutes until the driver arrives.
Can you think of some other advantages not mentioned by the author
(Creative thinking)
Internet +
financial industry
Internet +
medical treatment
Internet +
transportation industry
Internet + education
Internet +
catering industry
Discussion
2. The author mentions in the conclusion that the Internet has its problems. What do you think the problems are (Critical thinking)
(1) Personal information may be stolen.
(2) Surfing and playing games on the Internet can become addictive.
(3) Addiction to the Internet may lead to social isolation and depression.
(4) Internet viruses can infect and damage computers.
(5) We may not make sure the quality of the goods and the truth of the information.
However, the Internet also has its problems.
Every coin has two sides.
The Internet is a double-edged sword.
So
(1)We should never browse websites which could present potential danger.
(2)We should be able to identify the information online.
(3)We should be responsible for the information or comments we spread online.
(4)We must keep our private information safe.
3. The Internet is a double-edged sword. How can we use
the Internet properly and responsibly (Divergent thinking)
主题升华
The Internet has the power 1._________(connect) people across the world to a single 2._______(share) community. Billions of people in different parts of the world have joined it already, and 3. _________(obvious) many more will follow. We can achieve almost anything online—with access 4. ___ the Internet come some truly life-changing advantages. One of the greatest advantages of the Internet lies in the quick and easy access to a huge amount of information. No wonder the Internet has now become the first place that the 5. ________(major) of people turn to for information.
shared
to
majority
to connect
obviously
Summary
The Internet has also made our lives unbelievably convenient, with all sorts of goods and services 6.________(provide) by electronic commerce. Above all else，the Internet helps us establish and maintain 7.______(society) ties. No matter where we are, we are able to keep in contact with loved ones. However, 8.______ the Internet brings many valuable advantages, 9.______________(connect) has its problems. We must be aware of these problems and be careful to use the Internet properly and responsibly. Only in that way can the Internet be 10.__ place of discovery, wonder and inspiration for everyone.
social
while
being connected
provided
a
The Internet has the power to connect people across the world to a single shared community. Billions of people in different parts of the world have joined it already, and obviously many more will follow. Even in the countryside, the Internet enables people to reach beyond their villages and get in touch with the outside world. We can achieve almost anything online—with access to the Internet come some truly life changing advantages.
与……取得联系；和……接触
倒装结构
Analyze the key points of the text
Para. 1
One of the greatest advantages of the Internet lies in the quick and easy access to a huge amount of information. To a certain extent, the world’s knowledge is all at our fingertips. With the click of a mouse or the touch of a button, it is possible to find out almost anything we care to know, from recipes to travel packages, from military affairs to learning resources. In the time it takes to find one
＝consist in 存在于；在于
在一定程度上
掌握(信息)，熟悉、精通(知识等)，了如指掌
旅游套餐
Para. 2
book in the library, we can use a search engine to bring up millions of results. No wonder the Internet has now become the first place that the majority of people turn to for information.
使显示在计算机屏幕上，调出；提出
No wonder (that) ...意为“难怪……”，是固定句型。
定语从句
The Internet has also made our lives unbelievably convenient, with all sorts of goods and services provided by electronic commerce, more commonly known as e -commerce. You can have food delivered to you using food delivery apps and sites. Gone are the days of searching shop after shop for the perfect pair of boots—you can compare styles and prices quickly and easily in the comfort of your living room. Why wait hopelessly for a taxi in the cold rain It is now simple and fast to order one with a taxi app…
with复合结构作状语，其结构为“with＋宾语＋宾语补足语(动词-ed形式)”
作表语的分词Gone前置，句子全部倒装，正常语序是The days ...are gone。
Para. 3
Above all else, the Internet helps us establish and maintain social ties. With all sorts of communication software, physical distance no longer gets in the way. No matter where we are, we are able to keep in contact with loved ones, find long -lost friends and discover whole new communities who share our hobbies. An instant message, a group chat, a video call, a comment on an update—there are endless ways to share our views or let someone know we care about them.
最为重要的是……
引导让步状语从句
and连接了三个并列的动词keep、 find和discover
Para. 4
定语从句
However, while the Internet brings many valuable advantages, being connected has its problems. As with any great invention, we must be aware of these problems and be careful to use the Internet properly and responsibly. Only in this way can the Internet be a place of discovery, wonder and inspiration for everyone. It is truly a world without frontiers.
意识到；觉察到；知道
引导让步状语从句，意为“虽然，尽管”。
动名词作主语
部分倒装
Para. 5
Homework
Preview language points and recite the key
points of the text.